* {
  margin: 0;
  padding: 0;
  overflow-y: auto;
  /*overflow: hidden;*/
  /* Webkit浏览器隐藏滚动条 */
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE 10+ */
}

.display_background {
  position: absolute;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
/* 背景图片自适应屏幕大小 */
.display_background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.full_box {
  display: float;
  position: absolute;
  height: 50px;
  width: 50px;
  top: 20px;
  right: 20px;

  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  div {
    transition: all 0.6s;
    font-size: 40px;
    color: white;
    opacity: 0;
  }
}
.full_box:hover {
  div {
    opacity: 1;
  }
  cursor: pointer;
}
.info_box {
  position: absolute;
  top: 0;
  width: 100%;
  margin: 30vh 0;
  color: white;
  font-family:'华文新魏';

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  .title {
    font-size: 4.5vw;
  }
  .sponsor {
    margin: 25vh 0 10vh 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    .sponsor_first {
      font-size: 3vw;
      margin: 1vh 0;
    }
    .sponsor_second {
      font-size: 3vw;
      margin: 1vh 0;
    }
  }
  .time {
    font-size: 2vw;
  }
}